Kardashian, 28, wearing a black tank top and long black shorts, gave her 15-year-older a lift on her back. Jenner, wearing a bikini top and jean shorts, then stood up tall and raised her arms in the air. She was quickly caught on camera in her perfect cheerleading pose, but didn't exactly stick the dismount. Instead, Jenner fell off Khloe's back in the water with a big laugh.

But once she got home, she started planning a trip back. "Just finished telling Lamar about our trip to Greece! I still can't get over how stunning it is there," she tweeted later that night. "I can't wait to go back with my hubby."